Susan, you can maybe find a workaround by checking MIDI Editor Menu: Options -> 'Sync editor transport to project transport', solo the track and use a loop or markers for navigation.
That said, things could be far better in that aspect. I eg don't like how the scrollbar is restricted to the active item and that grid lines are only shown in the active area. And some more of such stuff.
But I am in an extraordinary forgiving mood, because we're finally getting editable CC events in piano roll with the next release
Woohoo!